TITLE

Photosynthetic parameters and chlorophyll fluorescence characteristics of Pleioblastus kongosanensis f. aureostriaus under drought stress

AUTHOR(S)
LI Juan; PENG Zhen-hua; GAO Jian; CHEN Yuan-wen
PUB. DATE
June 2011
SOURCE
Yingyong Shengtai Xuebao;Jun2011, Vol. 22 Issue 6, p1395
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A pot experiment was conducted to study the variations of Pleioblastus kongosanensis f. aureostriaus plant morphology, leaf water content (LWC), leaf water potential (LWP), photosyn- thetic parameters, chlorophyll fluorescence parameters, and soil water content (SWC) under natu- ral drought stress, as well as the relationships between these variations and environmental factors. On the 17th day under the stress, the P. kongosanensis presented damaged symptom. Its leaves de- hydrated, drooped, and wrap-formed. On the 43rd day, the aboveground part of the plant died from dehydration. When the plant was re-watered for 10 days, the chlorophyll fluorescence parameters had no significant differences with those on the 43rd day under the stress. The SWC decreased sig- nificantly in 0-21 d of the stress, and the LWP and LWC dropped rapidly and significantly after 17 d and 29 d, respectively. With the increase of drought stress, the leaf transpiration rate (Tr ) and stomatal conductance (gs ) had a persistent decline, photosynthetic rate (Pn ) had a greater fluctuation, and instantaneous water use efficiency (PWUE) decreased after an initial increase. Af- ter 17 d drought stress, the limiting factor of Pn was from stomatal to non-stomatal, and the actual photosynthetic efficiency (ΦPS∥) declined significantly; after 25 d, the photosynthetic organ was damaged, and the maximum photochemical efficiency of PS∥(Fv / Fm ) and non-photochemical quenching (qN) changed significantly from 0.64 to -0.11 and from 0.79 to 0.33, respectively. The Tr, gs, and PWUE had close correlations with LWP; the Pn, Tr, and gs were sensitive to air relative humidity (RH); and the gs was the main factor causing the diurnal variations of photosynthetic parameters. It was suggested that P. kongosanensis could grow well on the soil with relative moisture content ⩾12% and drought duration less than 25 d.
ACCESSION #
63484600

 

Related Articles

  • Vase Life Extension and Chlorophyll Fluorescence Yield of Bougainvillea Flower as Influenced by Ethanol to Attain Maximum Environmental Beautification as Ornamental Components. Hossain, A. B. M. Sharif; Boyce, Amru Nasrulhaq; Majid, Haji Mohamed A. // American Journal of Environmental Sciences;2008, Vol. 4 Issue 6, p625 

    The study was conducted to investigate the effect of ethanol at different concentrations (ET) on bougainvillea flower longevity and delay senescence in storage condition. The treatments were water control, 2% ET, 4% ET, 8% ET, 10% ET, 20% ET, 30% ET, 40% ET, 50% ET and 70% ET. Flower longevity...

  • Physiological Responses of Two Morinda Species under Saline Conditions. Nivas, Desai; Gaikwad, D. K.; Chavan, P. D. // American Journal of Plant Physiology;May2011, Vol. 6 Issue 3, p157 

    A pot experiment was conducted to investigate the effects of different salt concentrations on growth features, photosynthetic pigments and nutrient status in two species of Morinda-Morinda citrfolia and Morinda pubescens seedlings. Increased salinity had significantly altered the qualitative...

  • Changes in morphological, physiological, and biochemical responses to different levels of drought stress in chinese cork oak ( Quercus variabilis Bl.) seedlings. Wu, M.; Zhang, W.; Ma, C.; Zhou, J. // Russian Journal of Plant Physiology;Sep2013, Vol. 60 Issue 5, p681 

    Changes in growth, leaf water status, pigments, osmolytes, activities of peroxidase (POD), catalase (CAT), superoxide dismutase (SOD), and ascorbate peroxidase (APX), and ascorbic acid (ASA) content were investigated in Chinese cork oak ( Quercus variabilis Bl.) seedlings. Three-month-old...

  • Chlorophylls, ligands and assembly of light-harvesting complexes in chloroplasts. J. Hoober; Laura Eggink; Min Chen // Photosynthesis Research;Nov2007, Vol. 94 Issue 2/3, p387 

    Abstract  Chlorophyll (Chl) b serves an essential function in accumulation of light-harvesting complexes (LHCs) in plants. In this article, this role of Chl b is explored by considering the properties of Chls and the ligands with which they interact in the complexes. The overall...

  • Effect of Ni2+ on Early Stages of Chlorophyll Biosynthesis and Pheophytinization in Euglena gracilis. Manankina, E. E.; Mel'nikov, S. S.; Budakova, E. A.; Shalygo, N. V. // Russian Journal of Plant Physiology;May/Jun2003, Vol. 50 Issue 3, p390 

    The effect of Ni2+ on the early stages of chlorophyll biosynthesis and pheophytinization in Euglena gracilis cells was studied. Incubation of the cells with 10–4 M Ni2+ for 7 days resulted in a higher chlorophyll content, enhanced production of 5-aminolevulinic acid (ALA), and in...

  • Effects of crown development on leaf irradiance, leaf morphology and photosynthetic capacity in a peach tree. Walcroft, Adrian; Le Roux, Xavier; Diaz-Espejo, Antonio; Dones, Nicolas; Sinoquet, Hervé // Tree Physiology;Sep2002, Vol. 22 Issue 13, p929 

    The three-dimensional (3-D) architecture of a peach tree (Prunus persica L. Batsch) growing in an orchard near Avignon, France, was digitized in April 1999 and again four weeks later in May 1999 to quantify increases in leaf area and crown volume as shoots developed. A 3-D model of radiation...

  • Xanthophyll Analysis of High Desert Trees. Garcia, Theresa // New Mexico Journal of Science;Dec2015, Vol. 49 Issue 1, p16 

    Xanthophylls are light sensitive plant pigments that help compensate for free radicals by dissipating excess absorbed light energy. Light is a necessity for plant survival, but too much light can generate oxygen reactive species that can damage or even kill a plant. Plants adjust their light...

  • Photo-induced interactions of hypocrellin A with phycobiliproteins. Zhao, Baozhong; Xie, Jie; Zhao, Jingquan // Research on Chemical Intermediates;2004, Vol. 30 Issue 4/5, p429 

    Photo-induced interaction of hypocrellin A (HA) with a water-soluble protein (C-phycocyanin, C-PC) was studied by monitoring the changes of the photo-physical properties of C-PC, as well as those of HA. It was found that the solubility of HA in phosphate-buffered saline solution was greatly...

  • Changes in the Contents of Inactive Complexes of Photosystem II in Chlorella Cells Incubated in the Light and Darkness. Chemeris, Yu. K.; Korol'kov, N. S.; Seifullina, N. Kh.; Rubin, A. B. // Russian Journal of Plant Physiology;May/Jun2004, Vol. 51 Issue 3, p287 

    A prolonged (20–24 h) dark incubation of Chlorella pyrenoidosa algae at 37–38°С did not diminish the relative yield of the variable chlorophyll fluorescence (Fv/Fm) and enhanced the relative contribution of the slow phase (sFv) to the kinetics of Fv increase. Iodoacetamide, a...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics